@Zoro_OP Hi, do you mean the download speed decreased? If it only happens with wireless connection, you could try changing wireless channel and channel width on Advanced->Wireless->Wireless Settings...

@jamilahmed123 Hi, please try changing the 5GHz WiFi band on Advanced->Wireless->Wireless Settings->5GHz part of your router, you could try channel 36, 40 etc..

@feekz Hi, may I know if the issue happens when you ping the LAN IP address of the router or when you ping other public IP address? and is it via wired or wireless connections? You could also try...

@Kaneshkar Thank you very much for posting on TP-Link Community. You contacted the local support team via but got no response, right? For the rebooting issue you mentioned, please try the solution...

@DhanushCeg Hi, If you are still experiencing similar issues, we recommend trying the solution provided in this thread: Archer C80v1&v2.2/C64v1/C6v4 Restarting Randomly

Hi All, If any other users are experiencing similar issues, we recommend trying the solution provided in this thread: Archer C80v1&v2.2/C64v1/C6v4 Restarting Randomly